Shoemaker&#39;s jack.



W. BSGHE. SHOEMAKERS JACK.

APPLICATION FILED 00T. 9, 1913.

Patented July 21, 19,14

if @K @MO/@www THE NORRIS PETERS CU.: PHDTO-LITHO.. WASHINGTON. D4 C.

UNITED STATES PATENT ernten.

WILLIAM ESCHE, 0F MILWAUKEE, WISCONSIN, ASSIGNOR OF ONE-HALF TO ERWIN B.LOEWENBACI-I, 0F MILWAUKEE, WISCONSIN.

SHOEMAKERS JACK.

Specification of Letters Patent.

Patented July 21, 1914;l

Application led October 9,K 1913. Serial No. 794,286.

To all 'whom it may concern.'

Be it known that I, WILLIAM Escnn, a citizen of the United States, andresident of Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvement-s inShoemakers7 Jacks; and I do hereby declare that the following is a full,clear, and exact description thereof.

My invention has for its object to provide a simple, economical andeffective shoemakers jack especially adapted for re pair work, theconstruction and arrangement of which jack is such that the last iscapable of both longitudinal and transverse adjustment, whereby the shoeor boot is completely filled out to facilitate the work.

With the above object in view the invention consists in certainpeculiarities of construction and combination of parts as hereinafterset fort-h with reference to the accompanying drawings and. subsequentlyclaimed.

In the drawings Figure 1 represents a longitudinal sectional elevationof a jack embodying` the features of my invention; Fig. 2, a plan viewof the same with parts broken away and parts in section to more clearlyillustrate details of construction, the section being indicated by line2 2 of Fig. l, and Fig. 3, a detailed inverted plan view of a two-partsole member constituting one of the members of the last.

Referring by characters to the drawings, 1 represents a hollow standardhaving a pintle stud 2 extending from its foot portion for engagementwith a centrally apertured block 3, which block is pivoted to a base 4,the standard stud 2 being confined within the block. by means of aset-screw 3, the inner end of which engages an annular groove that isformed in said stud. By this construction it will be seen that thestandard is capable of being tilted at any angle for convenience of theoperator and the same is also capable of horizontal swing due toits studconnection, it being obvious that, under certain conditions, thestandard can be locked against horizontal movement by tightening theset-screw 3.

The standard 1 terminates with a head 5 having' a horizontally disposedaperture 5 therein, the upper face of the head being fitted with aremovable heel-plate 6, whereby different sizes of said heel-plates maybe employed. The horizontally disposed aperture 5 of the standard headis provided for the reception of the squared shank 7 of an instep block8, which block is thus capable of longitudinal adjustment relative tothe heel-plate, being supported by its shank that'is in slidableengagement with the head. The heel end of the instepblock 8 isvertically slotted for the reception of one arm 9 of a bell-crank lever,which lever is pivotally connected to the instep-block. The end of thearm 9 engages a slot 9 that is formed in one end of a stem 10, whichstem is countersunk within the flat base of the instep block and isadapted to slide back and forth therein under control of the bell-cranklever. The opposite end of the stem 10 is transversely branched andcarries a pair of camactuat ing lugs 10', which lugs are in the form ofrollers for the purpose of eliminating friction and project above theflat base of said instep-block. vided with front and rear transverselydisposed dovetailed guide-rails 11, 11', respectively. The guide-railsare arranged to receive a pair of longitudinally divided sect-ions 12,12, of a sole-plate, which sections, as best shown in Fig. 3, are formedwith front and rear transversely disposed dovetailed grooves 13, 13, forengagement with the guide-rails 11, 11, it being understood that themembers forming the soleplate are provided with flat faces slidable uponthe flat base of the instep-block. The flat faces of each of thesole-plate members are also provided with corresponding obliquelydisposed cam grooves 14, 1-1, which grooves converge toward the heelportion of the sole-plate and intersect each other at the division linebetween its sections. The cam-grooves receive the cam-lugs 10 whichproject upwardly from their actuat- The instep-block is also prosoyinstep-carrying bell-crank lever projects into the hollow standard andis connected to a treadle 15 by a link 16. 'Ihis treadle is fulcrumedwithin the standard and has connected. thereto one end of a coiledspring 17, the opposite end of which is secured to the standard, thesaid coiled spring serving to impart a lifting movement to the treadleand its connection to the bell-crank lever, whereby the stem 10` whichcarries the cam-lugs is forced outwardly or toward the toe portion ofthe last to thus contract the sole-plate members.

The inner end of the instep-block shank 7 is connected to one arm of abell-crank lever 18, which lever is also fulcrumed within the standard.The opposite arm of this bell-crank lever is connected by a link 16 to atreadle 15 which corresponds in every respect to the treadle previouslydescribed, bein fulcrumed within the standard and having a coiled springconnection 17. 'Ihe action of the lcoiled spring 17 tends to lift thetreadle 15 and, through its bell-crank connection with the shank 7,cause the instep-block, together with the sole-plate carried thereby, tomove toward the heel-plate 6 and contract the last longitudinally. Thusit will be seen that the springs which connect the several levermechanisms serve to contract the various parts of the last in oppositionto power applied to the treadles. IVhen the last is so contracted theshoe or boot is inserted over the parts, as indicated in dotted lines,and to iill out said shoe lengthwise the operator presses treadle 15',causing the foot portion of the last comprising the sole-plate andinstep-block to move away from the heelplate and lengthen the lastlongitudinally to the desired dimension. In order to lock the parts intheir lengthened position, I pro- Vvide a spring-controlled pawl 19,which pawl is in -pivotal union with the treadle 15 and is adapted toengage any one of a series of ratchet-teeth 2O that are formed withinthe edge of one wall of the standard 1. The sole-plate expanding treadle15 is provided with a similar pawl and ratchet mechanism for lockingsaid treadle in a depressed position. After the last has filled out theshoe longitudinally the operator presses the treadle 15, whereby motionis imparted to the stem 10 through the bell-crank lever, which actioncauses said stem to move toward the heel-plate and, owing to engagementof the cam-lugs 10 with the obliquely disposed grooves 141, 14V, of thesole-plate, the members of said sole-plate will thus be spread apart tofill out the width of the shoe, whereby the latter isfiirmly held in alldirections for the convenience of the operator, it being understood thatwhen the treadle 15 is depressed it is locked in such depressed positionby the pawl 4and ratchet mechanism.

While I have illustrated mechanism whereby the standard may be revolvedupon an axis and tilted at various angles, it is obvious that saidstandard, in some instances, may be rigidly fastened toa bench. Itisalso manifest that, while I have described specific construction forcarrying out my invention, I may, without departing from the spirit ofthe invention, vary the details within the knowledge of skilledmechanics.

I claim:

1. A jack comprising a standard having a head, a heel-plate carried bythe head, an instep-block carried by the standard and ad justablelongitudinally relative to the heelplate, a longitudinally dividedsole-plate iitted upon the instep-block, and means for spreading andcontracting the sole-plate transversely.

2. A jack comprising a standard having a head, a heel-plate carried bythe head, an instep-block in yslidable union with the standard head, alongitudinally divided sole-plate mounted upon the base of theinstep-block, means for transversely adjusting the sole-plate members,and actuating meehanism for adjusting the sole-plate and instep-block. Y

3. A jack comprising a standard having a head, a heel-plate carriedthereby, an instepblock having a shank in slidable union with the head,a longitudinally divided sole-plate having obliquely disposed camsurfaces therein, a slide carried by the instep-block provided with lugsfor engagement with the sole-plate cam-slots, transversely disposedguides connecting the sole-plate and instepblock, an actuating lever forthe slide, and an actuating lever for the instep-shank.

4. A jack comprising a hollow standard having a head provided with ahorizontally disposed aperture, a heel-plate carried by the head, aninstep-block provided with a shank in slidable union with the headaperture, a longitudinally divided sole-plate fitted to thebase of theinstep-block, transverse guides connecting the sole-,plate andinstep-block, obliquely disposed cam surfaces carried `by the sole-platemembers, a longitudinally slidable stem having lugs for engagement withthe cam surfaces of the sole-plate, a bell-crank lever in pivotal unionwith said instep-block having one arm engageable with the slidable stem,a bell-crank lever in pivotal union with the standard having one armengageable with the shank of the aforesaid instep-block, levers carriedby the standard in connection with the bellcrank levers, and means forlocking vsaid levers.

5. A j ack comprising a standard provided with a head, a heel-platecarried thereby, an instep-block in slidable union with the head,

va longitudinally divided sole-plate mounted upon the base of theinstepeblock, means for spreading and contracting the sole-plate thecounty of Milwaukee and State of Wisnieln-loers transversely, and` meansfor ad- Consin in the presence of two Witnesses.

justing the instep-block, together With the sole-plate, longitudinallyrelative to the WILLIAM ESOHE' 5 heel-plate. Witnesses:

In testimony that I claim the foregoing I GEO. W. YOUNG, have hereuntoset my hand at Milwaukee in M. E. DOWNEY.

Copies of this patent may be obtained for ive cents eaeh,-by addressingthe Commissioner of Patents, Washington, D. C.

